KR20050001715A - Apparatus for processing disc in multi tray DVD system and method for the same - Google Patents

Abstract

PURPOSE: A disc processing apparatus and a method thereof in a multi tray DVD system are provided to collectively display data on plural DVD titles loaded on a multi tray and to offer a regeneration option setup environment to a user. CONSTITUTION: The system comprises DVD titles, a multi tray, a front end(110), a disc processor(180), and a memory(170). The DVD titles store presentation data to be regenerated, and navigation data to be used in regenerating the presentation data. The multi tray enables a user to load plural DVD titles concurrently. The front end(110) optically reads navigation data of each loaded DVD title according to a predetermined sequence. The disc processor(180) parses basic data on each DVD title by using the navigation data, displays the basic data on all the loaded DVD titles on a screen at a user's request, and enables the user to set regeneration options for each DVD. The memory(170) stores the basic data and regeneration option information of each DVD title.

Description

Apparatus for processing disc in multi tray DVD system and method for the same}

The present invention provides a disc for two or more DVD titles in a DVD player or a digital TV + DVD player composite product equipped with a multi-tray and disc auto changer capable of inserting two or more DVDs simultaneously. An apparatus and a method for providing a user with a collective display of information and a reproduction option setting environment.

As the market demand for DVD players and DTV + DVD complex systems soars, more diverse demands on the functions of these products are emerging. There are also a huge number of different types of DVD titles on the market, especially titled series. In addition, as the production of movies consisting of multiple episodes soared, in order to meet the needs of users who purchase and watch several DVDs at once, a system that provides the convenience of playing multiple DVDs in a batch is required.

Multi-tray allows you to load two or more DVD titles simultaneously in a single DVD player or DTV + DVD composite system. In addition, a device such as a disc auto changer or a changer plays a role of physically selecting a DVD to be played among a plurality of DVDs inserted in the player.

The multi tray and changer that supports batch playback of a plurality of DVDs described above allows users to play multiple DVDs at once and play them on the player at once without having to manually replace each DVD title. When equipped, it provides convenience for viewing at once.

However, a conventional DVD player or DTV + DVD composite system (hereinafter referred to as a multi-tray DVD system for convenience of description) equipped with a multi-tray and changer only provides information on the disc currently being played, and is mounted on another tray. It does not effectively provide information about the title of the DVD. Therefore, in order to obtain information about a DVD inserted in another tray, it is necessary to select the tray in which the DVD exists and then obtain the disc information by physically reading the disc. This also causes a problem of physically re-reading the DVD of the other tray each time in order to obtain brief information about the DVD present in the other tray during the playback of the particular DVD.

In addition, in the conventional multi-tray DVD system, there is a disadvantage in that it is not possible to pre-set the options for audio and sub-pictures and other playback-specific options for each DVD. That is, in order to set a specific DVD, it is possible to select a tray in which the DVD is inserted and switch to a playable mode. Therefore, there is no way to set options collectively for all DVDs inserted in the current player, and play-related options must be set for each disc. In order to solve this problem, it is necessary to set playback related options collectively for all DVD titles inserted into each tray through a simple user interface. That is, a function that allows the user to collectively set playback options on one screen is required.

In the conventional multi-tray DVD system, there is no function related to independent management and processing of the final playback position information for each DVD. Here, the final play position information includes the physical position information of the disc at the point where the DVD stops playing when the DVD is stopped in the middle without being watched to the end. Information that can be used to support existing features. Therefore, in the case of a multi-tray DVD system, it is necessary to manage such final playback position information independently for each tray, but there is a problem that such a function is insufficient in the conventional multi-tray DVD system. As a result, if a user stops watching a DVD, or alternately watches multiple DVDs, and wants to watch the DVD again when they have stopped playing, the user must manually search to jump to the point where they stopped playing. There is a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a user with comprehensive information on DVD titles inserted in each tray in a DVD system having a multi-tray and changer function. An apparatus and a method thereof are provided.

Another object of the present invention is to provide an apparatus and method for allowing a user to pre-set all the playback related options such as audio and subpicture options of DVDs inserted into each tray in a multi tray DVD system at once. .

Another object of the present invention is to store the final playback position information independently for the DVD titles inserted in the respective trays so that the user can play the DVD titles from where they left off during subsequent playback even if the user interrupts the playback of the DVD titles. An apparatus and a method thereof are provided.

1 is a block diagram showing an embodiment of a multi-tray DVD system according to the present invention

2 is a flowchart illustrating an embodiment of a process of storing information of a disc of each tray in a multi-tray DVD system according to the present invention.

3 is a view illustrating a file structure of a video region in a general DVD.

4 is a view showing an embodiment of a screen configuration for displaying information of DVD titles inserted in each tray in a multi-tray DVD system according to the present invention.

5 is a flowchart illustrating an embodiment of a process of collectively setting playback-related options for DVD titles inserted into respective trays in a multi-tray DVD system according to the present invention.

6 is a flowchart illustrating an embodiment of a process of applying a preset playback related option when a DVD title is played in a multi-tray DVD system according to the present invention.

7 is a flowchart illustrating an embodiment of a storage and recovery process for a final playback position of a DVD inserted into each tray in a multi-tray DVD system according to the present invention.

Explanation of symbols for main parts of the drawings

110: front end 111: DVD

112: optical pickup 113: RF and servo error generation unit

114: servo control section 115: spindle motor drive section

116: motor 120: disc changer and control unit

130: DVD data processor 140: stream demultiplexer

150: A / V / subpicture decoder 160: navigation manager

170: memory 180: multiple disk processing unit

A reproduction environment setting apparatus in a multi-tray DVD system according to the present invention for achieving the above object includes a DVD title in which presentation data to be reproduced and navigation data for reproduction of the presentation data are recorded; A multi tray into which a plurality of DVD titles can be inserted simultaneously; A front end for optically reading the navigation data of each DVD title inserted into the multi tray in a predetermined order; After parsing and storing the basic information of each DVD title of the multi tray from the navigation data read out through the front end, the basic information of all DVDs inserted in the multi tray is displayed on one screen according to the user's request, A plurality of disk processing units which provide a user interface environment so that a user can set playback options for the first time; And a memory for storing the basic information of each DVD parsed by the plurality of disk processing units and the reproduction option information of each DVD set by the user.

The plurality of disk processing units may be configured to parse basic information of each DVD inserted into the multi tray by VMGI of navigation data of the corresponding DVD.

The multi-disc processing unit reads the play option information settable by the user for each DVD from the memory and displays the play option information of each DVD selected by the user among the displayed play option information of each DVD. If the playback of a specific DVD title is selected after saving the data, the playback option of the stored DVD is automatically read.

The multi-disc processing unit stores, in the memory, the final reproduction position information of the interrupted DVD title when the reproduction of a specific DVD title is interrupted in the middle.

Disc processing method of the multi-tray DVD system that can be inserted at the same time a plurality of DVD titles according to the present invention,

(a) parsing basic information of all DVDs inserted in the multi-tray DVD system, processing basic information of each parsed DVD, storing the same in a memory, and displaying the same on one screen;

(b) providing a user interface environment for the user to set playback options for each DVD at a time based on the basic information of each parsed and stored DVD, and recalling a playback option set by the user in the user interface environment. Storing in memory; And

(c) if the playback of a specific DVD title is stopped in the middle, the playback option and the final playback position information of the interrupted DVD title are stored in the memory, and if the playback of the DVD title is selected, the playback option of the DVD title from the memory is selected. And reading out the final playback position information and performing playback from the point of time when it was interrupted.

Step (b) reads and displays playback related option information parsed from DVDs of respective trays according to a user's request, and sets a playback option of each DVD inserted in a multi tray through a display screen. Storing the play option information of each DVD set by the user in the memory; and when the play of a specific DVD inserted in the multi tray is selected, the play option information of the DVD is read from the memory and automatically And setting the playback environment of the DVD title.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings illustrating the configuration and operation of the embodiment of the present invention, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, By the technical spirit of the present invention described above and its core configuration and operation is not limited.

The present invention provides the title information and playback option information for all DVDs loaded in each tray in a multi-tray DVD system equipped with a multi-tray and a disc auto changer capable of simultaneously inserting two or more DVD titles. It also supports batch display and also allows you to preset all the necessary settings for the playback of each DVD title, such as subpictures, audio-related option settings and language and other detailed options such as the full menu. Its features are that it provides.

FIG. 1 is a block diagram illustrating a disc processing apparatus of a multi-tray DVD system according to the present invention, after generating an RF signal for reproducing data recorded on a specific DVD, a focus error signal and a tracking error signal for servo control. The RF signal is digitized, amplified and output, and the focus error signal and the tracking error signal are connected to the front end part 110 and the front end part 110 for servo control. Disc changer and control unit 120 for performing the control, the DVD data processor 130 for demodulating and error correction of the RF signal, that is, the DVD data amplified by the front end unit 110, the DVD Demultiplexes the DVD data output from the data processor 130 to separate audio (A) / video (V) / subpicture / navigation stream data, and then A / V / subpicture The trim data is decoded by applying a corresponding decoding algorithm to the stream demultiplexer 140 and the A / V / subpicture stream data output from the stream demultiplexer 140 for decoding. A navigation manager for controlling a playback operation of a specific DVD to receive a navigation stream data output from each decoder 150 and the stream demultiplexer 140 to perform an operation corresponding to a user's key input. 160, a memory 170 that is connected to the DVD data processing unit 130 to store disc information, playback related options, initial playback position, etc. of a specific DVD, and processing and playback of disc information for a plurality of DVD titles. A plurality of disk processing unit 180 performs functions for processing related option information and memory input / output of related data.

In the present invention, a DVD title or a DVD or a disc has the same meaning, and they are used interchangeably for convenience of explanation.

In FIG. 1 configured as described above, the front end unit 110 is an optical system of a general DVD reproducing system, and the optical pickup 112 physically accesses and controls the disc 111 to be reproduced. That is, the optical pickup 112 causes the light beam focused on the objective lens (not shown) under the control of the servo controller 114 to be placed on the signal track of the DVD 111 to be reproduced, and also reflected from the signal recording surface. The incoming light is condensed with the objective lens and then converted into an electrical signal and output to the RF and servo error generator 113. The RF and servo error generating unit 113 detects an RF signal for reproducing data, a focus error signal for tracking a servo signal, and a tracking error signal from an input electrical signal, and then the RF signal is digitized and amplified to perform DVD data. The control unit 130 outputs the focus error signal and the tracking error signal to the servo control unit 114. The servo controller 114 generates a focus drive signal from the focus error signal so that the optical pickup 112 can read the data of the disk 111 accurately, and controls the focus actuator in the optical pickup 112, A tracking drive signal is generated to control the tracking actuator in the optical pickup 112. In addition, the servo controller 114 drives the spindle motor driver 115 according to the focus error signal and the tracking error signal, and the spindle motor driver 115 rotates the disk 111 through the motor 116. To control.

The DVD data processor 130 performs 8/16 demodulation, error correction (ECC), and descramble on the digitized RF data DVD physically read from the front end 111. After that, it is output to the stream demultiplexer 140.

At this time, the presentation data and the navigation data are recorded on the DVD 111. The presentation data includes sub-picture data such as audio and video data and subtitle video which are to be reproduced. The navigation data is information necessary for reproducing the presentation data recorded on the DVD. The navigation data includes video manager information (VMGI), video title set information (VTSI), and program chain information. Information (PGC), presentation control information, and data search information.

Accordingly, the stream demultiplexer 140 demultiplexes the DVD data output from the DVD data processor 130 into a presentation stream data and a navigation stream data, and the presentation stream data is again audio / video / After separating each of the sub picture stream data, the separated A / V / sub picture stream data is output to the A / V / sub picture decoder 150, and the navigation stream data is output to the navigation manager 160. The A / V / subpicture decoder 150 applies a corresponding decoding algorithm to the input A / V / subpicture stream data, decodes each of them, and outputs them for display.

In addition, the navigation data separated from the stream demultiplexer 140, that is, data search information (DSI) and presentation control information (PCI) data, are output to the navigation manager 160, and the navigation manager 160. Controls the overall flow of DVD playback based on the DSI and PCI data.

In the first embodiment, the plurality of disk processing unit 180 parses basic information of all the disks inserted in the multi-tray DVD system, processes the information, and displays the information on one screen. To this end, the plurality of disk processing unit 180 reads the necessary part from the VMGI (Video manager information) including the entire information of each disk immediately after the plurality of disks are inserted into each tray or immediately after the system is powered on. And storing the information in the memory 170, and reading information about all the discs mounted in the multi-tray DVD system upon the user's request from the memory 170 and outputting the information on one screen. It includes.

FIG. 2 is a flowchart illustrating a process of storing disc information of a DVD inserted into each tray in a multi-tray DVD system according to a first embodiment of the present invention. FIG. When it occurs, it is first checked whether a disk exists in the tray that is the current inspection target (step 201).

To this end, the present invention internally assigns a unique number that can be identified to each tray to determine the order of inspection to determine the existence of a disk. That is, the inspection order for each tray is determined by the priority assigned internally, and if a DVD exists in the tray to be currently inspected (step 202), the disc information of the DVD is read and stored in the memory 170. (Step 203). The above process is repeated for each tray, and when the collection of the disk information for all the trays is completed, the disk information storing operation is terminated (steps 204 and 205). In this case, the disk information stored in the memory 170 is collected from video manager information (VMGI) among the navigation data stored in the VIDEO_TS.IFO in the video zone on the DVD.

3 is a diagram showing a file structure in a video area of a DVD defined by a DVD-Video standard. As shown in FIG. 3, all files containing data of video of a DVD are stored in a directory called VIDEO_TS. At this time, a file called VIDEO_TS.IFO exists in the VIDEO_TS directory, and the VMGI (video manager information) data containing the main menu and general information of the DVD is stored in the file. Thus, rough information on each DVD title is obtained from VMGI data. The VMGI contains the number and attribute information of a video title set (VTS) stored in a disc, a pointer to each title, and attribute information of a video, audio, subpicture, etc. of a main menu. In addition, the VIDEO_TS.IFO file stores information called a video title set attribute table (VTS_ATRT). The VTS_ATRT includes attribute information about video, audio, subpicture, etc. for each title. Therefore, the disk information can be configured by extracting necessary data from a file named VIDEO_TS.IFO in which the above-mentioned attribute information is stored. That is, the plurality of disk processing units 180 of the present invention may display language information of audio and subpictures supported by DVD titles inserted into respective trays, and information about display options such as video resolution, aspect ratio, pan-scan, and letterbox. Can be read and stored in memory 170.

FIG. 4 illustrates an embodiment of a configuration in which the plurality of disk processing units 180 read information about DVD titles inserted into respective trays, store them in the memory 170, and display them collectively on one screen. In the present invention, in a multi-tray DVD system capable of inserting five discs, an integer of 1 to 5 is internally assigned to each tray, and discs are not inserted into trays 3 and 5. Assume At this time, the disc to be played currently is inserted into tray 2, and in this embodiment, a triangular mark is displayed to the left of the tray number for convenience of classification. Referring to FIG. 4, not only the information of the disc to be played currently, but also information on the remaining two discs inserted into trays 3 and 5 are displayed on one screen.

In this case, the information displayed to the user is assumed to be three types: a title of each title, a language type of a playable audio stream, and a language type of a subtitle stream. The information required for constructing a comprehensive information display screen for each DVD title can be modified in addition to the three types described in the embodiment of the present invention.

Meanwhile, as a second embodiment, the plurality of disk processing unit 180 is a user interface for setting playback options for audio, subpicture, angle, and other items for all the discs mounted in the multi-tray DVD system. Provide an environment. To this end, the plurality of disk processing unit 180 stores the playback related option information parsed from the disk of each tray in the memory 170 according to the first embodiment, and the playback of the disk of each tray at the user's request. Reading the relevant options from the memory and displaying them, setting the playback options for the discs inserted into each tray via the display screen, storing the playback options for each disc in the memory, and When playing a disc inserted in the tray, it reads the related play option value from the memory and then automatically sets audio, subpicture, menu display and other play related matters.

FIG. 5 is a flowchart illustrating a process of collectively setting playback options for discs inserted into respective trays in the multi-tray DVD system according to the second embodiment of the present invention. A user interface screen for setting playback options for all the discs is displayed as shown in FIG. 4 (step 501). At this time, the plurality of disk processing unit 180 displays all the play option information that can be selected based on the data stored in the memory 170 in the process of collecting the disk information for each item. For example, when setting options for audio playback-related languages, the user is displayed with all language types selectable on the disc. The user then selects the audio language he or she wishes to play (step 502). The above process is repeated for other items such as subpicture and angle related options.

Here, the items of the playback option to be preset may be changed within the range in which the disc information may be used, in addition to those shown in the present embodiment.

If the user sets playback options for at least one or more DVD titles inserted in the multi tray in step 502, the playback option data is stored in the memory 170 (step 503). For example, in the user interface environment illustrated in FIG. 4, when the user sets the playback options of the discs inserted into the trays 1, 2, and 4 sequentially or in random order, the playback options of the respective discs are stored in the memory 170. Are stored in steps 504 and 505.

The option data stored in this way is used to automatically set the playback environment when playing the DVD title in the future.

If a disc is replaced in the middle, it is set separately for the tray and maintains the stored play option value for other trays in which no disc change occurs. The above-described playback related option setting process can be performed even during the playback of a specific disc. At this time, the disc being played maintains a pause state.

6 is a diagram illustrating a method for automatically setting a playback environment of a corresponding DVD title according to a playback option setting value previously selected and stored by a user as shown in FIG. 5 when playing a disc inserted in each tray of the multi-tray DVD system of the present invention. As a flowchart showing the process, first, a corresponding playback related option setting value is read from a memory 170 in which playback related options of a DVD title to be played are stored (step 601). The playback environment variable of the DVD player is changed according to the playback option value (step 602). When playing a DVD title, the environment variables that store the settings for the main menu, audio, subpicture, angle, etc. are largely composed of system parameters (SPRM) and general parameters (GPRM). The SPRM consists of 24 16-bit parameters and stores menu language, audio / subpicture / angle number, parental level, initial language setting value of audio / subpicture, and the like. The GPRM consists of 16 16-bit sized parameters and can be used as a counter or used to store any necessary values in the system.

Accordingly, the step 602 is a play option option read from the memory 170, so that the environment variable of the multi tray DVD system, that is, the SPRM and GPRM values, is changed appropriately, so that the multi tray DVD system selects and stores the play option previously selected by the user. The DVD title is played back according to the set value (step 603).

In other words, whenever the user changes the DVD title to be played in the multi tray, it is possible to solve the inconvenience of manually setting a new play related option. After inserting a DVD title into a multi-tray DVD system and setting the playback-related option only once, the playback environment of the DVD title is automatically set to the value of the playback option for subsequent playback. This provides the convenience of playing a DVD right away, without having to set the playback options each time.

Meanwhile, in the third embodiment, the plurality of disk processing unit 180 stops playback in the middle of watching a DVD title and then plays back the disc in order to be able to play it again from the point of time when the disc is played again. The playback position information is stored in the memory 170. To this end, the plurality of disk processing unit 180 stores the playback options and physical position information of the disk at the time of interruption in the memory 170 independently of each tray when the disk is stopped. This involves reading the saved parameters when playing back, restoring the options at the point of interruption, and playing the disc from the point of interruption.

FIG. 7 is a flowchart showing a process of storing and restoring a final playback position of a disc inserted in each tray of a multi-tray DVD system according to a third embodiment of the present invention. Manage location information. In this case, a method of limiting the number of trays for storing the final playback position may be used to reduce the hardware cost of the storage.

7, the DVD title A is played back (step 701). If the user stops playing the DVD title A while the DVD title A is not played to the end, the final playback position of the DVD title A is recalled. Store in memory 170 (step 702). At this time, if the user stops the DVD title A and then plays the DVD title B (step 703), the user similarly stores the final playback position of the DVD title B in the memory 170 (step 704).

Then, if the user again selects the playback of the DVD title A (step 705), the DVD title A is played from the portion interrupted by the last playback position of the DVD title A previously stored in the memory 170 (step 706).

Thus, the third embodiment of the present invention provides the user with the convenience of watching DVD title A continuously from the previously interrupted position.

At this time, the information to be stored in the memory 170 for the recovery of the final playback position, along with the number of the tray corresponding to the setting value of the playback environment variable setting value of the DVD system at the time of stopping playback, for example, audio and subtitle information The values can be. In addition, it stores some necessary values of a cell number, a NV_PCK address, a PGC playback control related information, a VTSN, and an SPRM. In addition to the memory 170 for storing the final playback position, a separate space for storing a flag value indicating whether the playback of each tray is stopped is required. Therefore, the DVD player can know whether or not the disc currently being played is interrupted during playback by referring to this flag value. If the disc is interrupted, the DVD player reads the final play position information from the memory 170 from the point where it was interrupted. You can play.

As described above, the present invention provides a batch display of disc information for two or more DVD titles and a related option for playing two or more DVD titles in a DVD player or a digital TV + DVD player combination product equipped with a multi-tray and a changer. By supporting the general setting function and storing the final play position of two or more DVD titles, the user can use the multi tray DVD system in a more effective way.

As described above, according to the disk processing apparatus and method of the multi-tray DVD system according to the present invention, the information of the disc inserted in each tray of the multi-tray DVD system is collectively collected and inserted into the current multi-tray DVD system on one screen. By displaying the information of all the disks collectively, there is an effect of solving the inconvenience of the user repeating the process of manually selecting the disk to browse the information of each disk.

In addition, the present invention provides a function that allows a user to collectively set playback related options of all discs currently inserted into a multi-tray DVD system based on the collected disc information, thereby setting playback related options of a plurality of discs. It is effective in providing a more efficient and convenient way for the user.

In addition, the present invention provides a method of separately storing the final playback position information of a DVD title when playback of the corresponding DVD title is stopped for each tray, so that when the user plays back several DVDs alternately, the DVD title is interrupted for each DVD. The ability to play from one point has the effect of solving the inconvenience of the user manually moving or searching to the point where he left off.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (8)

A DVD title in which presentation data to be reproduced and navigation data used for reproduction of the presentation data are recorded; A multi tray into which a plurality of DVD titles can be inserted simultaneously; A front end for optically reading the navigation data of each DVD title inserted into the multi tray in a predetermined order; After parsing and storing the basic information of each DVD title of the multi tray from the navigation data read out through the front end, the basic information of all DVDs inserted in the multi tray is displayed on one screen according to a user's request, A plurality of disk processing units which provide a user interface environment so that a user can set playback options for the first time; And And a memory for storing basic information of each DVD parsed by the plurality of disk processing units and playback option information of each DVD set by a user. The disk processing apparatus of claim 1, wherein the plurality of disk processing units are provided. The basic information of each DVD inserted into the multi tray is parsed by VMGI of navigation data of the corresponding DVD. The disk processing apparatus of claim 1, wherein the plurality of disk processing units are provided. The user can set play option information for each DVD from the memory and display them on one screen, and among the displayed play option information of each displayed DVD, the play option information of each DVD selected by the user is stored in the memory. Disc playback device of a multi-tray DVD system, characterized in that when the playback of the DVD title is selected, the playback option of the stored DVD is read and automatically set. The disk processing apparatus of claim 1, wherein the plurality of disk processing units are provided. And when the playback of a particular DVD title is interrupted in the middle, the final playback position information of the interrupted DVD title is stored in the memory. The disk processing apparatus of claim 4, wherein the plurality of disk processing units are used. The playback options and the final playback position information are independently stored in the memory for the DVD titles inserted into the trays, and when the playback of a specific DVD is selected, the playback options and the final playback position information of the corresponding DVD stored in the memory are stored. Disc processing apparatus of the multi-tray DVD system, characterized in that the control is performed to read from the point of interruption. In the disk processing method of the multi-tray DVD system which can insert a plurality of DVD titles at the same time, (a) parsing basic information of all DVDs inserted in the multi-tray DVD system, processing basic information of each parsed DVD, storing the same in a memory, and displaying the same on one screen; (b) providing a user interface environment for the user to set playback options for each DVD at a time based on the basic information of each parsed and stored DVD, and recalling a playback option set by the user in the user interface environment. Storing in memory; And (c) if the playback of a specific DVD title is stopped in the middle, the playback option and the final playback position information of the interrupted DVD title are stored in the memory, and if the playback of the DVD title is selected, the playback option of the DVD title from the memory is selected. And reading the final playback position information and performing playback from the point of time at which it was interrupted. The method of claim 6, The basic information of each DVD inserted in the multi tray in the step (a) is parsed from the navigation data of the DVD. The method of claim 6, wherein step (b) Reading and displaying option information related to playback parsed from a DVD of each tray according to a user's request; Setting a playback option of each DVD inserted in the multi tray through the display screen, Storing playback option information of each DVD set by a user in the memory; And if the playback of a particular DVD inserted in the multi tray is selected, reading the play option information of the corresponding DVD from the memory and automatically setting a playback environment of the corresponding DVD title. Way.